* [perf story #59018] Bind onBeforeRowDragEnd event for gantt.

lib/zin/wg/gantt/js/v1.js

@@ -601,9 +601,6 @@ function initGantt()
             loadPage($.createLink('review', 'create', 'projectID=' + projectID));
         }
 
-        let taskID = 0;
-        if(ganttType == 'assignedTo') taskID = id;
-
         /* The id of task item is like executionID-taskID. e.g. 1507-37829, 37829 is task id. */
         let taskID   = ganttType == 'assignedTo' ? id : 0;
         let position = id.indexOf('-');
@@ -611,6 +608,22 @@ function initGantt()
 
         if(!isNaN(taskID) && taskID > 0) zui.Modal.open({url: $.createLink('task', 'view', 'taskID=' + taskID, 'html', true), 'size': 'lg'});
     });
+
+    gantt.attachEvent("onBeforeRowDragEnd", function(id, parent, tindex)
+    {
+        let tasks = gantt.getChildren(parent);
+        let task  = gantt.getTask(id);
+        let link  = $.createLink('programplan', 'ajaxResponseGanttMoveEvent');
+
+        //prevent moving to another position.
+        if(task.parent != parent || id.indexOf('-') == -1) return false;
+
+        $.post(link, {id: id, tasks: tasks});
+        return true;
+    });
+
+    /* Link attachEvent onAfterTaskDrag */
+    gantt.attachEvent("onBeforeTaskChanged", function(id, mode, task){return validateResources(id)});
 }
 
 $(function()